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| author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2003-03-29 17:32:36 +0000 |
|---|---|---|
| committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2003-03-29 17:32:36 +0000 |
| commit | fb3e5849bb139e8213b7afb5abd7ef5cc985d10b (patch) | |
| tree | 667fc6ee486c6a762c1fddb007396660ae3f5733 /exec-i386.c | |
| parent | 7854b05654b49c2197faef358e3ec1a7559797b9 (diff) | |
s390 support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@65 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'exec-i386.c')
| -rw-r--r-- | exec-i386.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/exec-i386.c b/exec-i386.c index f59e1ccecf..dedcbfabd6 100644 --- a/exec-i386.c +++ b/exec-i386.c @@ -87,6 +87,20 @@ static inline int testandset (int *p) } #endif +#ifdef __s390__ +static inline int testandset (int *p) +{ + int ret; + + __asm__ __volatile__ ("0: cs %0,%1,0(%2)\n" + " jl 0b" + : "=&d" (ret) + : "r" (1), "a" (p), "0" (*p) + : "cc", "memory" ); + return ret; +} +#endif + int global_cpu_lock = 0; void cpu_lock(void) |